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US 9,865,822 B2Granted
Blue phosphorescence compound and organic light emitting diode using the same
AssigneeLG Display Co., Ltd.
InventorsInbum Song, Sukyoung Bae
Life of this patent
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Abstract
A blue phosphorescence compound and an organic light emitting diode using the same are disclosed. The blue phosphorescence compound is represented by Chemical Formula 1 below: wherein ‘A’ and ‘B’ are symmetrically or asymmetrically substituted at positions of Nos. 2 and 7 or Nos. 3 and 6 of dibenzofuran core and are independently formed of an aromatic cyclic compound or a heterocyclic compound.
Claims4
A blue phosphorescence dibenzofuran compound selected from the group consisting of:
An organic light emitting diode comprising:
- an anode,
- a hole injection layer,
- a hole transport layer,
- a light emitting layer,
- an electron transport layer,
- an electron injection layer, and
- a cathode,
- which are sequentially stacked, and where the light emitting layer comprises a host that is a blue phosphorescence dibenzofuran compound selected from the group consisting of:
5 more elements
Dependencies are inferred from the claim text.